![]() ![]() In a companion paper, we describe versions of this code developed for derivative coupling MG models, including the Vainshtein- and K-mouflage-type models. For f ( R ) gravity, we have included new variants to diversify the model behaviour, and we have tailored the relaxation algorithms to these to maintain high computational efficiency. Derived from the parallel particle-mesh code glam, mg-glam incorporates an efficient multigrid relaxation technique to solve the characteristic nonlinear partial differential equations of these models. We describe the implementation, numerical tests and first results of a large suite of cosmological simulations for three classes of MG models with conformal coupling terms: the f ( R ) gravity, symmetron and coupled quintessence models. We present mg-glam, a code developed for the very fast production of full N-body cosmological simulations in modified gravity (MG) models. Such an emulator could be used to constrain $f(R)$ gravity with weak lensing analyses. We sample a wide 3D parameter space given by the current background scalar field value $10^$, and redshifts $0 < z < 2$, while in most cases the accuracy is better than $1\%$. ![]() In this work, we build an emulator, dubbed e-MANTIS, that performs an accurate and fast interpolation between the predictions of a given set of cosmological simulations, in $f(R)$ modified gravity, run with ECOSMOG. ![]() N-body simulations are required to explore the non-linear regime of structure formation but are very time consuming. In order to probe modifications of gravity at cosmological scales, one needs accurate theoretical predictions. ![]()
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